Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0421094819e9f04a13c8089aad31d4bb78ee991941271b3ec4eddd27bb6210c1131d956a18865f33be733e4228c130733d0f15275df9543feddca41544bda5c94e